PROGRESSIVE SUSPENSION 412 Series Shock - 11" - Harley-Davidson Big Twin '73-'86 - Standard - Chrome - H-D - 412-4030C

• Designed specifically for Harley models
• The 412's simple, durable design makes them a cost effective improvement to your motorcycle's suspension performance
• A five position cam style spring load preload adjuster lets you easily dial in your ride
• Some or all shocks listed are approved for road use. Refer to most recent certificate for current listing
• All shocks are measured center-of-eyelet to center-of-eyelet.
• When installing shocks on 1986-2015 XL models, it may be necessary to modify or space the chain/belt guard to allow proper clearance.
• A shock which is slightly longer than stock may alter the head angle slightly and provide somewhat quicker steering.
• A shock which is slightly shorter than stock may alter the head angle slightly and provide somewhat slower steering.
• Heavy Duty Applications are recommended for bikes that are operated at or near the manufacturer's maximum load rating over 50% of the time.
• Before purchasing or attempting to install shocks that are different than the OEM length, confirm that your wheel travel can be altered without causing clearance issues, such as swingarm/axle to exhaust contact as well as chain/belt guard or tire contact.
• Best value shock on the market today.
  
• Double wall steel body construction.
  
• Nitrogen charged, multi-staged velocity sensitive valving.
  
• Smooth, consistent damping.
  
• Progressively wound Spring.
  
• Standard Spring Rates are recommended for riders that weigh under 110kg.
  
• Performance Suspension Upgrades provide better handling through a Stiffer more controlled Ride.

Fitment Guide

Specs